Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

"The planet gets in the way from the point of view of any one spacecraft, so we had to spread them around the planet to look everywhere all at once." On Wednesday (Aug. 13), NASA announced that the ...

The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond during the long days of summer. By Jacey Fortin This article was updated ...

Tides come from a difference in gravity across an object. The force of gravity exerted by the Moon is about 4% stronger on the side of Earth that faces toward the Moon, compared to the opposite side ...

On its closest-ever flyby to the sun, NASA's Parker Solar Probe captured newly released images of solar winds purging out from the sun's outermost atmosphere, the Corona. Scientists are learning more ...